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| Jepson eFlora
Key to families | Table of families and genera This text currently parallels The Jepson Manual: Vascular Plants of California, Second Edition that is now available at the University of California Press. Text appearing in blue on this page will not appear in the printed book; it will be displayed only on the Web. Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link. |
Perennial from scaly rhizomes or glabrous stolons; dioecious ( monoecious).
Stem: matted (< 5 cm) to ascending and erect (<= 80 cm), stiff, glabrous, solid in ×-section.
Leaf: conspicuously 2-ranked; ligule membranous or fringed; blade flat or ± rolled, if short awl-like, generally glabrous, occasionally with hairy tufts at collar.
Inflorescence: panicle- or raceme-like (a single spikelet); spikelets short-pedicelled ( sessile), staminate inflorescence sometimes above leaves.
Spikelet: unisexual; pistillate generally = staminate, generally laterally compressed; glumes unequal (0), firm, awns 0, lower 3(5)-veined, upper 5–7(9)-veined; axis breaking above glumes and between florets; florets 3–20; lemma wide narrowing to acuminate tip, 7–11-veined, awn 0; palea < or > lemma; keel minutely hairy or scabrous.
9 species: N & South America, 1 sp. in Australia. (Greek: in 2 rows, from leaf arrangement) [Beetle 1943 Bull Torr Bot Club 70:638–650; Bell & Columbus 2008 Syst Bot 33:536–551]
1. Blade < 1.5 cm, awl-like; spikelet 1 per inflorescence; glumes 0 ..... D. littoralis
1' Blade > 1.5 cm, flat; spikelets 2–20 per inflorescence; glumes 2 ..... D. spicata
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.